Screen To World: Difference between revisions
Added examples, adapted "How do I know which object is being tapped?" article from old wiki
Nikitaivanov (talk | contribs) (Created page with "Given a screen coordinate, outputs the start and end points of a line going through that point (2 and 400 units away from the camera, respectively). That might sound weird, but usually you'll just wire those points into a Raycast to find the object the user tapped! /uploads/Screen To World.png = Notes = Due to a technical issue, still to be fixed, the output lags by one frame. I.e. if you Set Camera on frame N, then this block's...") |
(Added examples, adapted "How do I know which object is being tapped?" article from old wiki) |
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{{Block | |||
|image=Screen_To_World.png | |||
|type=s | |||
|folder=Math | |||
|input1={{Port|n|Screen X}} | |||
|input2={{Port|n|Screen Y}} | |||
|output1={{Port|v|World Near}} | |||
|output2={{Port|v|World Far}} | |||
}} | |||
Given a screen coordinate, outputs the start and end points of a line going through that point (2 and 400 units away from the camera, respectively). | |||
That might sound weird, but usually you'll just wire those points into a [[Raycast]] to find the object the user tapped, or [[Line vs Plane]] to find where on the ground the user tapped (see [[Screen To World#Examples|Examples]]). | |||
== Notes == | |||
Due to a technical issue, still to be fixed, the output lags by one frame. In other words, if you [[Set Camera]] on frame N, then this block's output will change on frame N+1. | |||
Because of this bug, the script will not function correctly on the first frame. To avoid incorrect values, use the block's output only if the [[Current Frame]] is greater than 0. | |||
== Examples == | |||
* Find the object the user has tapped by using [[Raycast]]. | |||
: {{Image|Tapped object.png}} | |||
* Find the position on the ground the user tapped (and place an object there) by using [[Line vs Plane]]. | |||
: {{Image|Line vs plane example1.png}} | |||
== Related == | |||
* [[World To Screen]] | |||
* [[Screen Size]] | |||
[[Category:Blocks]] | [[Category:Blocks]] | ||